Vulnerability Monitor

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CVE-2017-9023

The ASN.1 parser in strongSwan before 5.5.3 improperly handles CHOICE types when the x509 plugin is enabled, which allows remote attackers to cause a denial of service (infinite loop) via a crafted certificate.

Published

2017-06-08T16:29:00.543

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-835
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	strongswan	strongswan	≤ 5.5.2	Yes

References

http://www.debian.org/security/2017/dsa-3866 Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/98756 Third Party Advisory, VDB Entry ([email protected])
http://www.ubuntu.com/usn/USN-3301-1 Third Party Advisory ([email protected])
https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.html ([email protected])
http://www.debian.org/security/2017/dsa-3866 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/98756 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-3301-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.html (af854a3a-2127-422b-91ae-364da2661108)